Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics
This work investigated the preparation and properties of (Bi0. 5 Na0. 5 )1-1.5 x La x TiO 3 ceramics where x = 0, 0.05, 0.10, 0.15 and 0.20 mol fraction. The powders were fabricated by mixed oxide method and calcined at 800°C for 2 h. The ceramic pellets were prepared by uniaxial pressing method and...
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th-cmuir.6653943832-473942018-04-25T08:39:32Z Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics P. Eaksuwanchai S. Jiansirisomboon A. Watcharapasorn This work investigated the preparation and properties of (Bi0. 5 Na0. 5 )1-1.5 x La x TiO 3 ceramics where x = 0, 0.05, 0.10, 0.15 and 0.20 mol fraction. The powders were fabricated by mixed oxide method and calcined at 800°C for 2 h. The ceramic pellets were prepared by uniaxial pressing method and being sintered at various temperatures ranging from 1150-1200°C for 2 h. Bulk densities, phase, electrical and thermal properties were also measured using various techniques. The result showed that all ceramic samples possessed high density and XRD patterns indicated that all ceramics had a main phase of BNT-based composition with rhombohedral (or pseudocubic) structure. The formation of secondary phase was found for sample containing La greater than 0.10 mol fraction. Electrical resistivity measurements at low frequencies indicated a decreasing trend with increasing La addition indicating an increase in electronic conduction. The dielectric constant and thermal conductivity measurements also showed the effects of charged defects induced by La addition and macro defects present by the formed second phase in this material system. © 2013 Copyright Taylor and Francis Group, LLC. 2018-04-25T08:39:32Z 2018-04-25T08:39:32Z 2013-12-01 Journal 16078489 10584587 2-s2.0-84891813921 10.1080/10584587.2013.853572 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891813921&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/47394 |
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This work investigated the preparation and properties of (Bi0. 5 Na0. 5 )1-1.5 x La x TiO 3 ceramics where x = 0, 0.05, 0.10, 0.15 and 0.20 mol fraction. The powders were fabricated by mixed oxide method and calcined at 800°C for 2 h. The ceramic pellets were prepared by uniaxial pressing method and being sintered at various temperatures ranging from 1150-1200°C for 2 h. Bulk densities, phase, electrical and thermal properties were also measured using various techniques. The result showed that all ceramic samples possessed high density and XRD patterns indicated that all ceramics had a main phase of BNT-based composition with rhombohedral (or pseudocubic) structure. The formation of secondary phase was found for sample containing La greater than 0.10 mol fraction. Electrical resistivity measurements at low frequencies indicated a decreasing trend with increasing La addition indicating an increase in electronic conduction. The dielectric constant and thermal conductivity measurements also showed the effects of charged defects induced by La addition and macro defects present by the formed second phase in this material system. © 2013 Copyright Taylor and Francis Group, LLC. |
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P. Eaksuwanchai S. Jiansirisomboon A. Watcharapasorn |
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P. Eaksuwanchai S. Jiansirisomboon A. Watcharapasorn Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
author_facet |
P. Eaksuwanchai S. Jiansirisomboon A. Watcharapasorn |
author_sort |
P. Eaksuwanchai |
title |
Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
title_short |
Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
title_full |
Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
title_fullStr |
Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
title_full_unstemmed |
Effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
title_sort |
effect of lanthanum additive on electrical and thermal properties of bismuth sodium titanate ceramics |
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2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891813921&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/47394 |
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